A sealing ring protection structure for radial screw connection

Abstract

The present invention belongs to the technical field of cabin section connection sealing protection, and specifically relates to a sealing ring protection structure for radial screw connection, which is suitable for protecting O-rings during the assembly of cylindrical cabin sections connected by radial screws, and is particularly suitable for protecting O-rings during the assembly of radial screw-connected cabin sections that have high requirements for cabin section connection sealing. The sealing ring protection mechanism includes an elastic band and a clamping mechanism. The clamping mechanism includes a cap body, a seat body, a clamping head, a clamping handle and a cylindrical compression spring. The outstanding advantages of the present invention are that it can effectively protect O-rings during the radial screw assembly process, and can adapt to radial screw connections of various specifications and quantities.

Description

Technical Field

[0001] The invention belongs to the technical field of cabin section connection sealing protection, and in particular relates to a sealing ring protection structure for radial screw connection. Background Art

[0002] Radial screw connection is a common connection type between adjacent compartments. Figure 5 As shown, the outer cylindrical surface of one compartment section 1 is the mating surface, and the cabin body is designed with a threaded hole; the inner cylindrical surface of the other compartment section 2 is the mating surface, and the cabin body is designed with a countersunk hole. After the two compartment sections are sleeved together, they are fixed with radial screws. In order to ensure the sealing of the connection after the compartment sections are connected, a sealing groove is usually designed on the outer cylindrical surface of the compartment section 1, and an O-ring is installed in the sealing groove for sealing.

[0003] In order to ensure the sealing effect of the sealing ring, the sealing ring is usually required to have a certain amount of compression (for example, 18%-21%). Figure 6 As shown in the figure, at the initial stage of the cabin segment sleeve assembly, the sealing ring is squeezed and deformed by the cylindrical surface of the second cabin segment, and the first cabin segment and the second cabin segment begin to fit together. As the length of the cabin segment sleeve increases, when the sealing ring passes through the countersunk hole on the second cabin segment, the sealing ring will return to a circular shape under the action of the elastic restoring force. When the assembly continues, the sealing ring will be damaged by the shearing action of the countersunk hole of the second cabin segment, affecting the sealing performance of the cabin segment.

[0004] In view of the above technical problems, it is necessary to provide a protective structure for an O-ring in a radial screw connection assembly. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The technical problem to be solved by the present invention is: how to provide a sealing ring protection structure for the radial screw connection assembly process, which is required to protect the O-ring during the radial screw connection assembly process to avoid damage to the O-ring and further affect the compartment sealing.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a sealing ring protection structure for radial screw connection, the structure comprising: an elastic band 1 and a pressing mechanism 2;

[0009] The elastic band 1 is designed with a long hole for installing the clamping mechanism 2;

[0010] The clamping mechanism 2 adopts a thread drive + spring contraction solution, including a cap body 2-1, a seat body 2-2, a clamping head 2-3, a clamping handle 2-4 and a cylindrical compression spring 2-5;

[0011] The head portion at the lower end of the seat body 2-2 is a conical structure adapted to the countersunk hole of the cabin section, and the outer surface of the upper portion is provided with an external thread screwed with the cap body 2-1; the seat body 2-2 is provided with a receiving cavity inside for accommodating the clamping head 2-3;

[0012] The clamping head 2-3 is configured as a T-shaped head, with a step portion at the upper end and a cylinder at the lower part, and the outer layer of the cylinder is sleeved with the cylindrical compression spring 2-5;

[0013] The lower end of the cylindrical compression spring 2-5 is connected to the bottom inner wall of the accommodating cavity inside the seat body 2-2, and the upper end is connected to the lower end surface of the step portion;

[0014] The cap body 2-1 is provided in a door-shaped body, and a hollow cavity is provided inside thereof for accommodating the seat body 2-2, and the inner wall surface of the hollow cavity is provided with an internal thread to cooperate with the seat body 2-2; the middle part of the horizontal plate body on the upper part of the cap body 2-1 is perforated for inserting the clamping handle 2-4, and is provided with an internal thread to cooperate with the clamping handle 2-4;

[0015] The external thread on the clamping handle 2-4 cooperates with the cap body 2-1; it moves up and down by forward or reverse rotation, thereby driving the clamping head 2-3 to move up and down.

[0016] When the clamping handle 2-4 is rotated forward, the clamping handle 2-4 moves downward to drive the clamping head 2-3 to extend and fill the countersunk hole, and clamp the sealing ring during the assembly process.

[0017] When the clamping handle 2-4 is rotated in the reverse direction, the clamping handle 2-4 moves upward, and the clamping head 2-3 is lifted up under the elastic force of the cylindrical compression spring 2-5.

[0018] The elastic band 1 is used to press the clamping mechanism 2 onto the screw hole on the outer wall of the sleeve compartment section.

[0019] Wherein, the clamping head 2-3 of the clamping mechanism 2 is driven by the clamping handle 2-4 to move radially to fill the countersunk hole on the compartment section and to clamp the sealing ring during the sleeve connection process.

[0020] Among them, the handle at the top of the clamping handle 2-4 is designed with knurling for easy operation.

[0021] The elongated holes on the elastic band 1 are used to select corresponding elongated holes to install the clamping mechanism 2 according to the number and position of the radial screws during assembly and use;

[0022] The long holes on the elastic band 1 are used to adjust the number and position of the clamping mechanism 2 according to the configuration of the radial screws during assembly.

[0023] Among them, the lower end portion of the clamping head 2-3 is provided with an arc-shaped groove matching the radius of the sleeve cabin.

[0024] During assembly, first, the sealing ring is not installed, and the compartment section 1 3-1 and the compartment section 2 3-2 are sleeved, the countersunk hole of the compartment section 2 3-2 is aligned with the outer cylindrical surface of the compartment section 1 3-1, and the sealing ring protection structure is sleeved on the compartment section 2 3-2, and the direction of the clamping head 2-3 is adjusted in sequence to ensure that the arc groove at the front end of the clamping head 2-3 matches the arc of the compartment; then, the clamping handle 2-4 is continuously rotated to make the clamping head 2-3 fit the outer cylindrical surface of the compartment section 1 3-1;

[0025] Then separate compartment 1 3-1 and compartment 2 3-2, and install the sealing ring as required; put compartment 1 3-1 and compartment 2 3-2 into place, remove the sealing ring protection structure, and install the countersunk screws in sequence.

[0026] (III) Beneficial effects

[0027] Compared with the prior art, the present invention provides a sealing ring protection structure for use in the radial screw connection assembly process, which can protect the O-ring during the radial screw connection assembly process, avoid damage to the O-ring, and further affect the compartment sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the sealing ring protection structure connected by radial screws of the present invention.

[0029] Figure 2 It is a schematic diagram of the state of the clamping mechanism of the present invention.

[0030] Figure 3 It is a schematic diagram of the positioning link of the pressing head during the assembly process of the present invention.

[0031] Figure 4 It is a schematic diagram of the socketing link in the assembly process of the present invention.

[0032] Among them, 1: elastic band; 2-1 cap body; 2-2 seat body; 2-3 clamping head; 2-4 clamping handle; 2-5 cylindrical compression spring; 3-1: compartment section one; 3-2: compartment section two; 4-sealing ring; 5-screw.

[0033] Figure 5 and Figure 6 It is a schematic diagram of the prior art. DETAILED DESCRIPTION

[0034] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples.

[0035] In order to solve the above technical problems, the present invention provides a sealing ring protection structure for radial screw connection, such as Figures 1 to 4As shown, the structure comprises: an elastic band 1 and a pressing mechanism 2;

[0036] The elastic band 1 is designed with a long hole for installing the clamping mechanism 2;

[0037] The clamping mechanism 2 adopts a thread drive + spring contraction solution, including a cap body 2-1, a seat body 2-2, a clamping head 2-3, a clamping handle 2-4 and a cylindrical compression spring 2-5;

[0038] The head portion at the lower end of the seat body 2-2 is a conical structure adapted to the countersunk hole of the cabin section, and the outer surface of the upper portion is provided with an external thread screwed with the cap body 2-1; the seat body 2-2 is provided with a receiving cavity inside for accommodating the clamping head 2-3;

[0039] The clamping head 2-3 is configured as a T-shaped head, with a step portion at the upper end and a cylinder at the lower part, and the outer layer of the cylinder is sleeved with the cylindrical compression spring 2-5;

[0040] The lower end of the cylindrical compression spring 2-5 is connected to the bottom inner wall of the accommodating cavity inside the seat body 2-2, and the upper end is connected to the lower end surface of the step portion;

[0041] The cap body 2-1 is provided in a door-shaped body, and a hollow cavity is provided inside thereof for accommodating the seat body 2-2, and the inner wall surface of the hollow cavity is provided with an internal thread to cooperate with the seat body 2-2; the middle part of the horizontal plate body on the upper part of the cap body 2-1 is perforated for inserting the clamping handle 2-4, and is provided with an internal thread to cooperate with the clamping handle 2-4;

[0042] The external thread on the clamping handle 2-4 cooperates with the cap body 2-1; it moves up and down by forward or reverse rotation, thereby driving the clamping head 2-3 to move up and down.

[0043] When the clamping handle 2-4 is rotated forward, the clamping handle 2-4 moves downward to drive the clamping head 2-3 to extend and fill the countersunk hole, and clamp the sealing ring during the assembly process.

[0044] When the clamping handle 2-4 is rotated in the reverse direction, the clamping handle 2-4 moves upward, and the clamping head 2-3 is lifted up under the elastic force of the cylindrical compression spring 2-5.

[0045] The elastic band 1 is used to press the clamping mechanism 2 onto the screw hole on the outer wall of the sleeve compartment section.

[0046] Wherein, the clamping head 2-3 of the clamping mechanism 2 is driven by the clamping handle 2-4 to move radially to fill the countersunk hole on the compartment section and to clamp the sealing ring during the sleeve connection process.

[0047] Among them, the handle at the top of the clamping handle 2-4 is designed with knurling for easy operation.

[0048] The elongated holes on the elastic band 1 are used to select corresponding elongated holes to install the clamping mechanism 2 according to the number and position of the radial screws during assembly and use;

[0049] The long holes on the elastic band 1 are used to adjust the number and position of the clamping mechanism 2 according to the configuration of the radial screws during assembly.

[0050] Among them, the lower end portion of the clamping head 2-3 is provided with an arc-shaped groove matching the radius of the sleeve cabin.

[0051] During assembly, first, the sealing ring is not installed, and the compartment section 1 3-1 and the compartment section 2 3-2 are sleeved, the countersunk hole of the compartment section 2 3-2 is aligned with the outer cylindrical surface of the compartment section 1 3-1, and the sealing ring protection structure is sleeved on the compartment section 2 3-2, and the direction of the clamping head 2-3 is adjusted in sequence to ensure that the arc groove at the front end of the clamping head 2-3 matches the arc of the compartment; then, the clamping handle 2-4 is continuously rotated to make the clamping head 2-3 fit the outer cylindrical surface of the compartment section 1 3-1;

[0052] Then separate compartment 1 3-1 and compartment 2 3-2, and install the sealing ring as required; put compartment 1 3-1 and compartment 2 3-2 into place, remove the sealing ring protection structure, and install the countersunk screws in sequence.

[0053] Example 1

[0054] According to the present invention, a sealing ring protection structure for M4 countersunk screw radial screw connection is designed, and the diameter of the compartment sleeve end is φ164mm. The outer diameter of the cap body is 30mm, the height is 12mm, and the internal thread is M22X1. The front end of the seat body is a 90° cone, and the center hole is φ4.3mm. The diameter of the clamping head is φ4.2mm, and the front arc is R82mm. The cylindrical compression spring is 0.3X12X10.

[0055] During assembly, first, do not install the sealing ring, and connect the cabin section 1 3-1 and the cabin section 2 3-2, align the countersunk hole of the cabin section 2 3-2 with the outer cylindrical surface of the cabin section 1 3-1, and put the sealing ring protection structure of the present invention on the cabin section 2 3-2, and adjust the direction of the clamping head in turn to ensure that the arc at the front end of the clamping head matches the arc of the cabin; then rotate the clamping handle in turn to make the clamping head fit with the outer cylindrical surface of the cabin section 1 3-1.

[0056] Then separate the compartment 1 3-1 and the compartment 2 3-2, and install the sealing ring as required. Sleeve the compartment 1 3-1 and the compartment 2 3-2 into place, remove the sealing ring protection tooling, and install the countersunk screws in sequence.

[0057] This example only uses M4 screws as an example. In actual applications, a series of clamping mechanisms can be designed based on commonly used screw specifications for use in assembly.

[0058] This example only uses a complete elastic band as an example. In actual applications, the elastic band can be disconnected and a connection can be designed at the disconnection point. For products with a completely determined compartment diameter and the number of screws, a rigid ring can also be used to install the clamping mechanism.

[0059] The present invention can effectively prevent the sealing ring from being squeezed out by the hole on the cabin body during the radial screw sleeve assembly process, thereby reducing rework caused by sealing ring damage during the assembly process and sealing failure caused by sealing ring damage.

[0060] In summary, the present invention belongs to the technical field of cabin section connection sealing protection, and specifically relates to a sealing ring protection structure for radial screw connection, which is suitable for protecting O-rings during the assembly of cylindrical cabin sections connected by radial screws, and is especially suitable for protecting O-rings during the assembly of radial screw-connected cabin sections that require high cabin section connection sealing. The sealing ring protection mechanism includes an elastic band and a clamping mechanism. The clamping mechanism includes a cap body, a seat body, a clamping head, a clamping handle and a cylindrical compression spring. The outstanding advantages of the present invention are that it can effectively protect the O-ring during the radial screw assembly process, and can adapt to radial screw connections of various specifications and quantities.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An assembly method of a sealing ring protection structure for radial screw connection, the sealing ring protection structure for radial screw connection comprising: An elastic band (1) and a pressing mechanism (2); The elastic band (1) is provided with a long hole for installing a clamping mechanism (2); The clamping mechanism (2) adopts a thread drive + spring contraction solution, comprising a cap body (2-1), a seat body (2-2), a clamping head (2-3), a clamping handle (2-4) and a cylindrical compression spring (2-5); The head portion at the lower end of the seat body (2-2) is a conical structure adapted to the countersunk hole of the cabin section, and the outer surface of the upper portion is provided with an external thread screwed into the cap body (2-1); a receiving cavity is provided inside the seat body (2-2) for receiving the pressing head (2-3); The pressing head (2-3) is configured as a T-shaped head, with a step portion provided at the upper end and a columnar body at the lower part, and the outer layer of the columnar body is sleeved with the cylindrical compression spring (2-5); The lower end of the cylindrical compression spring (2-5) is connected to the bottom inner wall of the accommodating cavity inside the seat body (2-2), and the upper end is connected to the lower end surface of the step portion; The cap body (2-1) is provided in a door-shaped body, and a hollow cavity is provided inside the cap body (2-1) for accommodating the seat body (2-2), and the inner wall surface of the hollow cavity is provided with an internal thread for cooperating with the seat body (2-2); a hole is perforated in the middle of the horizontal plate body on the upper part of the cap body (2-1) for inserting the clamping handle (2-4), and an internal thread is provided for cooperating with the clamping handle (2-4); The external thread on the clamping handle (2-4) cooperates with the cap body (2-1); the clamping handle (2-4) moves up and down by rotating forward or reverse, thereby driving the clamping head (2-3) to move up and down; The invention is characterized in that, during assembly, the sealing ring is not installed first, and the cabin section 1 (3-1) and the cabin section 2 (3-2) are sleeved, the countersunk hole of the cabin section 2 (3-2) is aligned with the outer cylindrical surface of the cabin section 1 (3-1), the sealing ring protection structure is sleeved on the cabin section 2 (3-2), and the direction of the clamping head (2-3) is adjusted in sequence to ensure that the arc groove at the front end of the clamping head (2-3) matches the arc of the cabin section; then, the clamping handle (2-4) is continuously rotated so that the clamping head (2-3) fits the outer cylindrical surface of the cabin section 1; Then separate compartment one (3-1) and compartment two (3-2), and install the sealing ring as required; put compartment one (3-1) and compartment two (3-2) into place, remove the sealing ring protection structure, and install the countersunk screws in sequence.

2. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: When the clamping handle (2-4) is rotated forward, the clamping handle (2-4) moves downward to drive the clamping head (2-3) to extend and fill the countersunk hole, and to clamp the sealing ring during the assembly process.

3. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: When the clamping handle (2-4) is rotated in the reverse direction, the clamping handle (2-4) moves upward, and the clamping head (2-3) is lifted up under the elastic force of the cylindrical compression spring (2-5).

4. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The elastic band (1) is used to press the pressing mechanism (2) onto the screw hole on the outer wall of the sleeve compartment section.

5. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The pressing head (2-3) of the pressing mechanism (2) is driven by the pressing handle (2-4) to move radially to fill the countersunk hole on the cabin section and to press the sealing ring during the sleeve connection process.

6. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The handle at the top of the clamping handle (2-4) is designed with knurling for easy operation.

7. The assembly method of the sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The elongated holes on the elastic band (1) are used to select corresponding elongated holes to install the clamping mechanism (2) according to the number and position of radial screws during assembly and use.

8. The method for assembling a sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The long holes on the elastic band (1) are used to adjust the number and position of the clamping mechanisms (2) according to the configuration of the radial screws during assembly.

9. The method for assembling a sealing ring protection structure for radial screw connection according to claim 1, characterized in that: The lower end portion of the pressing head (2-3) is provided with an arc-shaped groove matching the radius of the sleeve cabin body.

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